Vol. 11, Issue 7 (2022)

Author(s):
SS Munje, S Nichal, HH Dikey and AN Warghat

Abstract:
At the research field, Regional Research Centre, Amravati, Dr. P.D.K.V., Akola (Maharashtra) has examined the population dynamics of insect pests of soybeans and their relationship to abiotic factors. Spodoptera litura, Spilarctia obliqua, Thysanoplusia orichalcea, Obereopsis brevis, Bemisia tabaci, and Melanagromyza sojae incidence observations were noted at weekly intervals. Based on observations and a study of the relationships between insect incidence and weather parameters, it was discovered that stem flies with 100% infestation showed a significant negative correlation with minimum temperature and that their maximum damage (100% infestation, 33.84%) was highly significant and negatively correlated with evaporation. Wind speed and S. obliqua incidence had a substantial positive correlation. Thus, evaporation and low temperature had a negative correlation with stem fly incidence, whereas wind velocity was found to have a positive link with S. obliqua incidence.